US secretary of state Hillary Clinton has described Iran as moving towards a 'military dictatorship'.

Her comments come amid attempts by the US to build support for tougher sanctions on the Revolutionary Guard which controls Iran's nuclear program.

The Guardian's diplomatic editor Julian Borger says the Obama administration is gradually stepping up the pressure on Iran.

A Guardian investigation into the state of Britain's university buildings reveals crumbling lecture theatres and halls of residences that are "at serious risk of major failure or breakdown". Jessica Shepherd has the details.

We hear from Britain's biggest lottery winners: a couple from Gloucestershire who scooped £56m.

Meanwhile as Russia's latest rich-list is released, our Moscow correspondent Luke Harding describes the rise of the oligarchs after the fall of communism.

And as the world's largest mobile phone show gets underway in Barcelona, Richard Wray reports on how the dominance of the iPhone in the apps market could be under threat.